1. Australian Bureau of Statistics. (1998). Participation in sport and physical activities, (Cat- no. 4177). Canberra: Common wealth Government of Australia.
2. Breastfeeding and the use of psychotropic medication: a review
3. Centers for Disease Control and Prevention. (2001). Increasing physical activity: A report on recommendations of the Task Forcec on Community Preventive Services. Morbidity and Mortality Weekly Report- 50 (RR- 18).